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Finding the Fourth Proportional to 74,101, 102,259.40 and 40,567

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Solution

The fourth proportional to 74,101, 102,259.40 and 40,567 is: 55,982.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,101 : 102,259.40 = 40,567 : x
  2. Step 2: Convert to fraction form
    74,101/102,259.40 = 40,567/x
  3. Step 3: Cross multiply
    74,101x = 102,259.40 × 40,567
  4. Step 4: Simplify right side
    74,101x = 4,148,357,079.80
  5. Step 5: Solve for x
    x = 4,148,357,079.80/74,101
  6. Step 6: Final answer
    x = 55,982.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.